Building with mppa feature is broken

[Elarnon]

I have fixed some issues in #171 but others remain. I realized this as I am trying to ensure the CI tests as much of the code as possible, including code behind feature gates.

[ulysseB]

This mmpa feature is known to be broken. @nicoTolly has been working on it and has a PR for it. I think you should synchronise with him on that.

[Elarnon]

Ok; I think if he is aware it is broken I'm good on my side. At least it's tracked in the issues now I guess :)